
MTIA Andy
could be Nick, I've been looking at and taking screenshots of the departure routes this afternoon to try to work out the optimum point, trouble is centre of the turn puts me in deep water - literally! (Wraysbury reeservoir)PorkScratching wrote:Those have worked well Andy. Shame they're not really established in the left turn by the time they're in a prime spot though. I wonder if 27R departures might be better?
That statement, and "Distance to centre of arc (max bank)" on the map, suggests you might be limiting your location rather more than you need to. With a turn of that magnitude (110deg or so), the bank angle will likely be constant for much of the turn, rather than increasing during the first half, reaching an instantaneous peak, and then decreasing. Bank will be rolled on at the start of the turn, held constant through most of the turn, and then rolled off again with 10-20deg of the turn left to go. So you should be able to position yourself more flexibly!andygolfer wrote:It seems that I was 2.4KM from the track when they were at maximum bank
I see what you mean Nick but I was also using the distance to work out how far away I would need to be to get a good topside whilst not going so far that the quality diminishes. From where I was the problem was that the aircraft was going away whilst banking rather than side on until the point where it was turning towards the sun (when the sun was not hidden by cloud) and the side facing me was becoming shadowed as the aircraft became side on. By being further south it would have become side on earlier. There is probably (as you say) some flexibility to it but the sun was becoming more and more of an issue as the day went on. Probably (I say probably because of the cloud that was about) if I'd been there at 8am the sun would have been on the side facing me throughout the turn - maybe I shouldn't have wasted time chasing red kites that were grounded by mist! I suppose I will just have to make another trip sometime to try my luckPorkScratching wrote:That statement, and "Distance to centre of arc (max bank)" on the map, suggests you might be limiting your location rather more than you need to. With a turn of that magnitude (110deg or so), the bank angle will likely be constant for much of the turn, rather than increasing during the first half, reaching an instantaneous peak, and then decreasing. Bank will be rolled on at the start of the turn, held constant through most of the turn, and then rolled off again with 10-20deg of the turn left to go. So you should be able to position yourself more flexibly!andygolfer wrote:It seems that I was 2.4KM from the track when they were at maximum bank
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